Figure 836. Slave Node — Dma Tx Fsm (Concept Scheme) - STMicroelectronics SPC572L series Reference Manual

RM0400
Table 820. TCD setting — Slave node — Tx mode(Continued)
TCD field
SSIZE[2:0]
SLAST[31:0]
DADDR[31:0]
DOFF[15:0]
DSIZE[2:0]
DLAST_SGA[31:0]
INT_MAJ
D_REQ
START
Value
2 Word transfer
–N —
— BDRL address
4 Word increment
2 Word transfer
–N No scatter/gather processing
0/1 Interrupt disabled/enabled
1 Only on the last TCD of the chain
0 No software request
Figure 836. Slave node — DMA Tx FSM (concept scheme)
Enables DMA Tx channel/filter request
(DMAERQH,DMAERQL)
Clear DTF
!DTF & !DRF &
(DBEF | HRF) & (IFMI! = 0) & DMA_TEN?
True
DMA Tx transfer (Req/Ack minor/major loop) from
RAM area to LINFlexD regs (channel/filter mapping)
DMA Tx transfer done?
True
DBEF?
False
Clear Token_DMA_Rx
Cleared by SW?
True
Clear DTF
DocID027809 Rev 4
Description
False
DTF?
False
False
False
True
Clear DBEF to transmit the LIN frame
(data for extended frame)
False
DBEF?
True (extended frame
size > 8 bytes)
LINFlexD
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